06.07.2016 12:48:47 | 22° halo

Martin Suess

Like other ice halos, 22° halos appear when the sky is covered by thin cirrus or cirrostratus clouds that often come a few days before a large storm front. However, the same clouds can also occur without any associated weather change, making a 22° halo unreliable as a sign of bad weather.

-- en.wikipedia.org/wiki/22°_halo


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